<template>
  <div class="permission-container">
    <div class="app-container">
      <!-- 表格 -->
      <el-card>
        <div style="text-align: right; margin-bottom: 20px">
          <el-button type="primary" size="small" @click="hAdd(1,'0')">添加权限</el-button>
        </div>
        <el-table row-key="id" :data="list" border>
          <el-table-column label="名称" prop="name" />
          <el-table-column label="标识" prop="code" />
          <el-table-column label="描述" prop="description" />
          <el-table-column label="操作">
            <template v-slot="{row}">
              <el-button v-if="row.type===1" type="text" @click="hAdd(2,row.id)">添加</el-button>
              <el-button type="text" @click="hEdit(row.id)">编辑</el-button>
              <el-button type="text" @click="hDel(row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>
    </div>
    <!-- 添加弹层 -->
    <el-dialog
      :visible.sync="showDialog"
      :title="isEdit?'编辑':'添加'"
      :close-on-click-modal="false"
      :close-on-press-escape="false"
      @closed="hClosed"
    >

      <!-- 表单内容 -->
      <el-form
        ref="form"
        label-width="100px"
        :model="formData"
        :rules="rules"
      >
        <el-form-item label="权限名称" prop="name">
          <el-input v-model="formData.name" />
        </el-form-item>
        <el-form-item label="权限标识" prop="code">
          <el-input v-model="formData.code" />
        </el-form-item>
        <el-form-item label="权限描述" prop="description">
          <el-input v-model="formData.description" />
        </el-form-item>
        <el-form-item label="权限启用">
          <el-switch
            v-model="formData.enVisible"
            active-text="启用"
            active-value="1"
            inactive-text="不启用"
            inactive-value="0"
          />
        </el-form-item>
      </el-form>

      <template #footer>
        <div style="text-align: right;">
          <el-button @click="showDialog = false">取消</el-button>
          <el-button type="primary" @click="hSubmit">确定</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>
<script>
import { addPermission, delPermission, getPermissionDetail, getPermissionList, updatePermission } from '@/api/permisson'
import { tranListToTreeData } from '@/utils'
export default {
  data() {
    const validCode = (rules, value, callback) => {
      let codeList = this.orginList.map(item => item.code)
      if (this.isEdit) {
        codeList = this.orginList.filter(item => item.id !== this.formData.id).map(item => item.code)
      }
      if (codeList.includes(value)) {
        callback(new Error(value + '已经存在'))
      } else {
        callback()
      }
    }

    const validName = (rules, value, callback) => {
      let nameList = this.orginList.filter(item => item.pid === this.formData.pid).map(item => item.name)
      if (this.isEdit) {
        // 找兄弟排除自己
        nameList = this.orginList.filter(item => item.pid === this.formData.pid && item.id !== this.formData.id).map(item => item.name)
      }
      if (nameList.includes(value)) {
        callback(new Error(value + '已经存在'))
      } else {
        callback()
      }
    }

    return {
      list: [],
      isEdit: false,
      showDialog: false, // 是否显示弹层
      orginList: [],
      formData: {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      },
      rules: {
        name: [
          { required: true, message: '名称不能为空', trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '权限标识不能为空', trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ],
        description: [
          { required: true, message: '描述不能为空', trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.loadPermissionList()
  },
  methods: {
    async loadPermissionList() {
      const res = await getPermissionList()
      // console.log(res)
      // this.list = res.data
      this.list = tranListToTreeData(res.data)
      this.orginList = res.data
    },
    async hSubmit() {
      // 兜底校验
      const valid = await this.$refs.form.validate().catch(e => e)
      if (!valid) return
      if (this.isEdit) {
        this.doEdit()
      } else {
        this.doAdd()
      }
    },
    hAdd(type, pid) {
      this.showDialog = true
      // 记录当前添加的关键信息
      this.formData.type = type
      this.formData.pid = pid
      this.isEdit = false
    },
    async doAdd() {
      // 发请求拿结果
      const res = await addPermission(this.formData).catch(e => e)
      if (!res.success) return this.$message.error(res.message)
      this.$message.success(res.message)
      // 关闭对话框
      this.showDialog = false
      // 重新获取数据
      this.loadPermissionList()
    },
    async hEdit(id) {
      this.isEdit = true
      this.showDialog = true
      // 使用id发请求获取数据并回填
      const res = await getPermissionDetail(id).catch(e => e)
      // 数据回填
      this.formData = res.data
    },
    async  doEdit() {
      // 发请求
      const res = await updatePermission(this.formData).catch(e => e)
      // 根据结果提醒用户
      if (!res.success) return this.$message.error(res.message)
      this.$message.success(res.message)
      // 关闭对话框
      this.showDialog = false
      // 重新获取页面
      this.loadPermissionList()
    },
    hClosed() {
      this.formData = {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      }
      this.refs.formData.resetFields()
    },
    async hDel(id) {
      // 先提醒用户
      const result = await this.$confirm('您确定要删除吗?', '提示').catch(e => e)
      if (result !== 'confirm') return
      // 根据结果提醒用户
      const res = await delPermission(id).catch(e => e)
      if (!res.success) return this.message.error(res.message)
      this.$message.success(res.message)
      // 重新获取
      this.loadPermissionList()
    }
  }
}
</script>
